2022MNRAS.517.4892J

Query : 2022MNRAS.517.4892J

2022MNRAS.517.4892J - Mon. Not. R. Astron. Soc., 517, 4892-4901 (2022/December-3)

Formation of the CH/CD molecules through radiative association of C with H/D.

JONES D., GUSTAFSSON M. and NYMAN G.

Abstract (from CDS):

Reaction rate constants have been calculated for the formation of CH and CD molecules through radiative association of C and H/D atoms in their ground states. Quantum mechanical and semiclassical/classical methods were used to obtain the reaction cross-sections. Shape resonances and inverse pre-dissociation are accounted for with Breit-Wigner theory. The potential, permanent/transition dipole moment curves and experimental pre-dissociation widths are taken from the literature. The resulting reaction rate constants were fitted to the Kooij formula for use in astrochemical modelling. Our rate constant is 3.5 × 10–17 cm3 s–1 at 100 K and it peaks at 20 K, where it is 8.0 × 10–17 cm3 s–1. These values are larger than what has been obtained in earlier studies but not large enough to account for the interstellar abundance of CH.

Abstract Copyright: © The Author(s) 2022. Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): astrochemistry - molecular processes - radiation mechanisms: general - software: simulations - ISM: abundances

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME zet Oph Cloud Cld 16 37 09 -10 34.0           ~ 114 0

Query : 2022MNRAS.517.4892J

Basic data :
NAME zet Oph Cloud -- Cloud
Other object types: otypes_help 		Cld (2007AJ)
ICRS coord. (ep=J2000) : 		16 37 09.0 -10 34 00 [ ] E ~
FK4 coord. (ep=B1950 eq=1950) : 		16 34 23.6 -10 28 00 [ ]
Gal coord. (ep=J2000) : 		006.2802 +23.5898 [ ]
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Identifiers (2) :
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NAME dze Oph Cloud NAME zet Oph Cloud

References (114 between 1850 and 2026) (Total 114)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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